sql-puzzle v0.0.5

sql-puzzle (WIP)

sql-puzzle is a highly composable and functional query builder. It is a lightweight wrapper for Sequelize and is written in TypeScript. sql-puzzle is built around the idea of composing functionalities and code reuse. This is achieved by defining SQL constructs at the lowest possible level and building upon those.

Install

Works with node v12, v14, v16, v18, and Sequelize v6.

npm install sequelize --save
npm install sql-puzzle --save

Examples

import {
  findAll, 
  where,
  and, 
  not, 
  or,
  as,
  eq, 
  from, 
  select,
  raw, 
  limit, 
  type Context, 
  asc, 
  joinAlias, 
  model, 
  innerJoin, 
  nest,
} from 'sql-puzzle';

// define your models as instructed by Sequelize documents
class User extends Model<InferAttributes<User>, InferCreationAttributes<User>> {
    declare id: number;
    declare name: string;
    declare email: string;
    declare flag: boolean;
}

class Post extends Model<InferAttributes<Post>, InferCreationAttributes<Post>> {
  declare id: number;
  declare title: string;
  declare content: string;
  declare userId: ForeignKey<User['id']>;

  declare static associations: {
    user: Association<Post, User>
    images: Association<User, Image>
  };
}

class Comment extends Model<InferAttributes<Comment>, InferCreationAttributes<Comment>> {
  declare id: number;
  declare comment: string;
}

class Image extends Model<InferAttributes<Image>, InferCreationAttributes<Image>> {
  declare id: number;
  declare path: string;
}

const ctx = {};
const idFromUsers = [from(User), raw(true), select('id')]
await findAll(
  ...idFromUsers,
  limit(3),
  asc('name')
)(ctx);

// build complex conditions
await findAll(
  ...idFromUsers,
  where(
    and(
      not('flag', () => true),
      or(
        eq('id', () => 3),
        eq('name', 'aidin'),
      ),
    ),
  ),
  limit(20)
)(ctx);



// define reusable sql constructs
const fromPosts = [from('post')]
const selectTitlefromPosts = [...fromPosts, select('title')]
const joinImages = [
  innerJoin(
    model(Image),
    joinAlias('images'),
    ...selectImagePath,
  )
];
const orderByTitleAndIdDesc = [desc('title', 'id')];
// use dynamic values
const limitByValue = [limit((ctx) => ctx.count)];

// mix and match sql constructs to build new queries
const res = await findAll(
  ...selectTitlefromPosts, 
  ...joinImages,
  ...orderByTitleAndIdDesc,
)(ctx);

const res = await findAll(
  ...selectTitlefromPosts, 
  ...joinImages,
)(ctx);

const res = await findAll(
  ...selectTitlefromPosts, 
  ...limitByValue
)(ctx);



const selectImagePath = select('path')
const joinPosts = [
  innerJoin(
    model(Post),
    joinAlias('posts'),
    ...joinImages
  )
];

const res = await findAll(
  from(User), nest(true),
  ...joinPosts,
  asc('id'),
)(ctx);

const res = await findAll(
  from(Post), 
  nest(true),
  ...joinImages,
  asc('id'),
)(ctx);

const res = await findAll(
  select('id', as('name', 'new_name')),
  from(Post), 
  nest(true),
  ...joinImages,
  asc('id'),
)(ctx);